Basically, what they say is that it is not necessary to major in science to apply to dental school but it is necessary to complete a prescribed series of science courses including biology, organic and inorganic chemistry, biochem, and physics.

Additionally, check out the information at the American Student Dental Association - www.asdanet.org and the American Dental Education Association www.adea.org.

Between these three sites, most questions should be answered. The ADA offers a job shadowing program that might be very useful for people considering a dental career as well. Details are at the site above.